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Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller

Author

Listed:
  • Dan Ni

    (School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
    Shanghai Kaiquan Pump (Group) Co., Ltd., Shanghai 201800, China)

  • Jinbo Chen

    (School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Feifan Wang

    (School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
    Shanghai Kaiquan Pump (Group) Co., Ltd., Shanghai 201800, China)

  • Yanjuan Zheng

    (Shanghai Marine Equipment Research Institute (SMERI), Shanghai 200031, China)

  • Yang Zhang

    (Shanghai Marine Equipment Research Institute (SMERI), Shanghai 200031, China)

  • Bo Gao

    (School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

For the centrifugal pump, the rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects the stability of systems and equipment. Therefore, this work proposes a new staggered impeller structure to suppress high-energy pressure pulsation in centrifugal pumps. The original impeller blade is divided into two layers and is staggered at 10°, 20° and 30° to form a staggered impeller. The dynamic pressure pulsation characteristics of both the original impeller and the staggered impeller are predicted using large eddy simulation (LES). The results indicate that the uniform staggered arrangement of blades can significantly reduce the pressure pulsation energy in the pump by 54.69% under the design conditions, while also achieving the best performance. Even under off-design conditions, the pressure pulsation energy can still be effectively suppressed by the staggered blades. The study of the time–frequency domain of the monitoring points near the tongue found that the phase difference in the pressure fluctuation caused by the RSI between the staggered impeller and the tongue prevents the superposition of pressure pulsation energy and efficiently suppresses it in the pump. The results can provide a reference for optimizing low-vibration-noise pump impellers in engineering applications.

Suggested Citation

  • Dan Ni & Jinbo Chen & Feifan Wang & Yanjuan Zheng & Yang Zhang & Bo Gao, 2023. "Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller," Energies, MDPI, vol. 16(9), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:9:p:3848-:d:1137000
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    References listed on IDEAS

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    1. An Eng Lim & Shireen Goh, 2023. "Effect of Microchannel Diameter on Electroosmotic Flow Hysteresis," Energies, MDPI, vol. 16(5), pages 1-18, February.
    2. Ni, Dan & Zhang, Ning & Gao, Bo & Li, Zhong & Yang, Minguan, 2020. "Dynamic measurements on unsteady pressure pulsations and flow distributions in a nuclear reactor coolant pump," Energy, Elsevier, vol. 198(C).
    3. Jian-Cheng Cai & Hao-Jie Chen & Volodymyr Brazhenko & Yi-Hong Gu, 2021. "Study of the Hydrodynamic Unsteady Flow Inside a Centrifugal Fan and Its Downstream Pipe Using Detached Eddy Simulation," Sustainability, MDPI, vol. 13(9), pages 1-19, May.
    4. Fu-Jun Wang & Li-Xia Qu & Ling-Yan He & Jiang-Yong Gao, 2013. "Evaluation of Flow-Induced Dynamic Stress and Vibration of Volute Casing for a Large-Scale Double-Suction Centrifugal Pump," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-9, August.
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    Cited by:

    1. Dan Ni & Hongzhong Lu & Shiyuan Huang & Sheng Lu & Yang Zhang, 2023. "Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump," Energies, MDPI, vol. 16(11), pages 1-21, May.
    2. Hao Yu & Chuan Wang & Guohui Li & Hongliang Wang & Yang Yang & Shaohui Wu & Weidong Cao & Shanshan Li, 2023. "Steady and Unsteady Flow Characteristics inside Short Jet Self-Priming Pump," Sustainability, MDPI, vol. 15(18), pages 1-23, September.

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